My note on 25 Feb, 2003 included:
In general one should always use the form that requires the minimum work for
the kernel. So for example:
Don't use Table[expr,{i,imax}] when Table[expr,{imax}] will work.
Don't use Do[expr,{i,imax}] when Do[expr,{imax}] will work.
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Borut replied:
I think the two iterator specifications {i,imax} and {imax} are two
different things, are they not.
For example Table[Random[], {10}] versus Table[Random[]+i, {i,imax}]
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I was saying that (for example) one shouldn't use
Table[ Random[], {i, 100000}]
but instead use
Table[ Random, {100000}]
because the later form gives the same result in less time. In summary don't
specify a variable for an iterator, if it isn't used. When you specify a
variable for an iterator, the kernel has to do extra work to maintain the
variable.
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Regards,
Ted Ersek